I think I will place the speakers first and go from there wrt the basement system. I'll buy the screen stuff once audio positions are set.

Here is a great podcast going over the basics to understand the importance of loudspeaker positioning in 2ch and multichannel. Fresh off the press right when most useful. smile. He doesn't give away the methods he uses though. $2500 a class.

But he is considered a real deal guru and teaches for CEDIA and trains installers worldwide.